1 1- GUI Handling
2 2- JSON Schema
- 2.1 3- Eligible Behaviours
  - 2.1.1 3.1 From Field of Source Issue to Field in Target Issue
  - 2.1.2 3.2 From Field of Target Issue to Field in Target Issue
3 4- Examples

1- GUI Handling

Create Behaviours: This is an array of JSON objects, where each object represents a behavior action with four attributes.

You must verify the JSON according to JSON Schema in order to store behaviors.

2- JSON Schema

{
    "$id": "http://json-schema.org/json/schema",
    "type": "array",
    "items": {
      "type": "object",
      "properties": {
        "fieldKey": {
          "type": "string"
        },
        "display": {
          "type": "boolean"
        },
        "automaticFillingOption": {
          "enum": ["constant_string", "source_field", "target_field", "source_issue_key"]
        },
        "automaticFillingValue": {
          "type": "string"
        }
      },
      "required": [
        "fieldKey",
        "display",
        "automaticFillingOption",
        "automaticFillingValue"
      ]
    }
  }

Description

Properties	Type	Description

Properties	Type	Description
fieldKey	string (field key)	enter here the field id. It can be a system field or custom field. The custom field Id must always start with `customfield_` . You can find the field Id by following steps in this page Find my custom field ID number in Jira \| Jira \| Atlassian Documentation, i recommend `option 2` in `using API`
display	boolean	If the value is false then the field will be hidden (mandatory field must be populated otherwise it will be shown). supported fields: summary description assignee reporter components fix versions labels priority checkboxes date picker date time picker multi select multi user picker number parent radio buttons single select text field url user picker
automaticFillingOption	enum ["constant_string", "source_field", "target_field", "source_issue_key"]	`constant_string`: choose this option to populate the field with a fixed text. `source_field`: choose this option when you want to populate the field with a value of field in the source issue. `target_field`: choose this option when you want to populate the field with a value of another field in the “issue create modal” in real time. `source_issue_key`: choose this option when you want to populate the field with the source issue’s issue key. Coming Soon: `no_action`: Planned : no pre-fill function.
automaticFillingValue	string (field key or value or emty)	if you choose `source_field` or `target_field` in `automaticFillingOption`, you have to enter the field Id in this property. if you choose `constant_string`, you have to enter the fixed text in this property. if you choose `source_issue_key` or `no_action` leave this property empty.

3- Eligible Behaviours

3.1 From Field of Source Issue to Field in Target Issue

the target custom field must be the same custom field id as the source.

	summary	description	assignee	reporter	components	fixVersions	duedate	labels	parent	priority	environment	checkboxes	multi select	user picker	paragraph	radio buttons	multi user picker	single select	number	url	text field	date time picker	date picker
From:	summary	description	assignee	reporter	components	fixVersions	duedate	labels	parent	priority	environment	checkboxes	multi select	user picker	paragraph	radio buttons	multi user picker	single select	number	url	text field	date time picker	date picker
summary	OK	OK									OK										OK

description		OK									OK
issuetype	OK	OK									OK										OK
assignee	OK	OK	OK	OK							OK			OK			OK				OK
reporter	OK	OK	OK	OK							OK			OK			OK				OK
components					OK
fixVersions						OK
duedate	OK	OK					OK				OK										OK	OK	OK
labels	OK	OK						OK			OK										OK
parent	OK	OK									OK										OK
priority	OK	OK								OK	OK										OK
environment		OK									OK
checkboxes												OK
multi select													OK
user picker	OK	OK	OK	OK							OK			OK			OK				OK
paragraph		OK									OK
radio buttons																OK
multi user picker																	OK
single select																		OK
number	OK	OK									OK								OK		OK
url	OK	OK									OK									OK	OK
text field	OK	OK									OK										OK
date time picker	OK	OK					OK				OK										OK	OK	OK
date picker	OK	OK					OK				OK										OK	OK	OK
source issue key	OK	OK									OK				OK					OK	OK
constant string	OK	OK									OK				OK					OK	OK

3.2 From Field of Target Issue to Field in Target Issue

	summary	description	assignee	reporter	components	fixVersions	duedate	labels	parent	priority	environment	checkboxes	multi select	user picker	paragraph	radio buttons	multi user picker	single select	number	url	text field	date time picker	date picker
From:	summary	description	assignee	reporter	components	fixVersions	duedate	labels	parent	priority	environment	checkboxes	multi select	user picker	paragraph	radio buttons	multi user picker	single select	number	url	text field	date time picker	date picker
summary		OK																			OK
description
assignee														OK			OK
reporter			OK											OK			OK
components
fixVersions
duedate
labels	OK	OK																			OK
parent	OK	OK																			OK
priority	OK	OK																			OK
environment
checkboxes
multi select
user picker			OK	OK										OK			OK
paragraph	OK	OK
radio buttons
multi user picker																	OK
single select
number	OK	OK																	OK		OK
url	OK	OK																		OK	OK
text field	OK	OK																			OK
date time picker	OK	OK																			OK	OK	OK
date picker	OK	OK																			OK	OK	OK

4- Examples

In this example the summary field will be populate with the value of summary field of source issue:

[
  {
    "fieldKey": "summary",
    "display": true,
    "automaticFillingOption": "source_field",
    "automaticFillingValue": "summary"
  }
]

if we need to hide the field after populate it we need just to change the value of display to false:

[
  {
    "fieldKey": "summary",
    "display": false,
    "automaticFillingOption": "source_field",
    "automaticFillingValue": "summary"
  }
]

In this example, we will populate a text field (custom field) with the value of summary field of source issue:

assuming that customfield_10337 is a text field:

In this example we will populate two fields (summary and description) in the same time with the value of summary field of source issue:

In this example we will populate a text field (custom field) with the value of summary field of target issue ( when we change the value of summary the value of text field will be change in real time):